Relevant bibliographies by topics / Francis turbine Computational fluid dynamics CFD Turbine design Hydropower

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Francis turbine Computational fluid dynamics CFD Turbine design Hydropower'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Francis turbine Computational fluid dynamics CFD Turbine design Hydropower"

1

Drtina, P., and M. Sallaberger. "Hydraulic turbines—basic principles and state-of-the-art computational fluid dynamics applications." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 213, no. 1 (1999): 85–102. http://dx.doi.org/10.1243/0954406991522202.

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The present paper discusses the basic principles of hydraulic turbines, with special emphasis on the use of computational fluid dynamics (CFD) as a tool which is being increasingly applied to gain insight into the complex three-dimensional (3D) phenomena occurring in these types of fluid machinery. The basic fluid mechanics is briefly treated for the three main types of hydraulic turbine: Pelton, Francis and axial turbines. From the vast number of applications where CFD has proven to be an important help to the design engineer, two examples have been chosen for a detailed discussion. The first
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Prasad, Nadipuram R., Satish J. Ranade, and Phuc Huu Nguyen. "Low-head hydropower energy resource harvesting: analysis and design of a Venturi turbine." Science and Technology Development Journal 18, no. 3 (2015): 102–10. http://dx.doi.org/10.32508/stdj.v18i3.891.

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The paper provides a low-head hydropower energy resource harvester (HyPER) design of 4-blade impeller with a fixed pitch blade angle. Based on a previous site evaluation and maximum power potential estimated without any modifications to the irrigation structure, the proposed objective of exploiting the estimated power will be met from harvester prototypes with portable, compact modular design. This makes assembly easy, uses off-the-shelf components to produce power. Calculations were carried out for designing guidevanes, Venturi tube, impeller blades and Computational Fluid Dynamics (CFD) soft
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Wu, Jingchun, Katsumasa Shimmei, Kiyohito Tani, Kazuo Niikura, and Joushirou Sato. "CFD-Based Design Optimization for Hydro Turbines." Journal of Fluids Engineering 129, no. 2 (2006): 159–68. http://dx.doi.org/10.1115/1.2409363.

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A computational fluid dynamics-based design system with the integration of three blade design approaches, automatic mesh generator and CFD codes enables a quick and efficient design optimization of turbine components. It is applied to a Francis turbine rehabilitation project with strict customer requirements to provide over 3% increase in peak efficiency, 13% upgrade in power, and improved cavitation characteristics. Extensive turbulent flow simulations are performed for both the existing and new turbines at design and off design conditions. In order to take into account the interactions betwe
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Pettongkam, Wichai, Wirachai Roynarin, and Decha Intholo. "Investigation of a Pico Turgo Turbine for High-Rise Buildings Using Computational Fluid Dynamics." Journal of Sustainable Development 11, no. 1 (2018): 112. http://dx.doi.org/10.5539/jsd.v11n1p112.

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Thailand is a rapidly developing country, and many high-rise buildings are being constructed to satisfy the demands of the increasing populace. The country is located in tropical South East Asia, which means it experiences abundant rainfall during the rainy season. The design of a hydropower system from a waterfall is re-invented in this study using rainwater flowing from the rooftop of a high-rise building to drive a Pico Turgo Turbine. In the building under study, the rooftop is restructured to receive and store 57.6 m3 of rainwater, which is allowed to flow down through a designed pipe of 2
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Adhikari, Neeraj, Anup Pandey, Anushka Subedi, and Nitesh Subedi. "Design of Pelton Turbine and Bucket Surface using Non-Uniform Rational Basis Spline and its Analysis with Computational Fluid Dynamics." Journal of the Institute of Engineering 16, no. 1 (2021): 41–50. http://dx.doi.org/10.3126/jie.v16i1.36534.

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Hydraulic turbines are used to convert the energy in flowing water to rotational mechanical energy. The design of high head Pelton turbine is difficult due to complex flow pattern on different parts. The basic dimensions can be obtained from interpolation techniques and design trends but the main challenge is to model the hydrodynamic surface. The surface must be designed such that it would harvest energy in an efficient manner and the manufacturing of the surface is also economic and simple. For the design of Pelton turbine, the data from Kulekhani-I hydropower is taken. Pelton turbine is des
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Rakibuzzaman, Md, Hyoung-Ho Kim, Kyungwuk Kim, Sang-Ho Suh, and Kyung Kim. "Numerical Study of Sediment Erosion Analysis in Francis Turbine." Sustainability 11, no. 5 (2019): 1423. http://dx.doi.org/10.3390/su11051423.

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Effective hydraulic turbine design prevents sediment and cavitation erosion from impacting the performance and reliability of the machine. Using computational fluid dynamics (CFD) techniques, this study investigated the performance characteristics of sediment and cavitation erosion on a hydraulic Francis turbine by ANSYS-CFX software. For the erosion rate calculation, the particle trajectory Tabakoff–Grant erosion model was used. To predict the cavitation characteristics, the study’s source term for interphase mass transfer was the Rayleigh–Plesset cavitation model. The experimental data acqui
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Prasad, Nadipuram R., Satish J. Ranade, and Phuc Huu Nguyen. "Low-head hydropower energy resource harvesting: design and manufacturing of the (HyPER) harvester." Science and Technology Development Journal 18, no. 3 (2015): 132–42. http://dx.doi.org/10.32508/stdj.v18i3.894.

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The design and manufacturing of a revolutionary hydropower harvester with characteristics that embrace the ecology and the environment is described. Guided by NEPA standards for environmental protection, the design concept incorporates a modular and self-supporting structure with a vertical-axis turbine-generator system that is: a) fabricated using Fiberglass and Carboncomposites and is light weight, and b) is easy to manufacture and assemble utilizing offthe- shelf electromechanical components and deploy to produce the desired power. A computational fluid dynamics (CFD) software, ANSYS®, is u
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Shrestha, Ujjwal, and Young-Do Choi. "A CFD-Based Shape Design Optimization Process of Fixed Flow Passages in a Francis Hydro Turbine." Processes 8, no. 11 (2020): 1392. http://dx.doi.org/10.3390/pr8111392.

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In recent times, optimization began to be popular in the turbomachinery field. The development of computational fluid dynamics (CFD) analysis and optimization technology provides the opportunity to maximize the performance of hydro turbines. The optimization techniques are focused mainly on the rotating components (runner and guide vane) of the hydro turbines. Meanwhile, fixed flow passages (stay vane, casing, and draft tube) are essential parts for the proper flow uniformity in the hydro turbines. The suppression of flow instabilities in the fixed flow passages is an inevitable process to ens
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Noon, Adnan Aslam, and Man-Hoe Kim. "Sediment and Cavitation Erosion in Francis Turbines—Review of Latest Experimental and Numerical Techniques." Energies 14, no. 6 (2021): 1516. http://dx.doi.org/10.3390/en14061516.

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Sediment and cavitation erosion of the hydroelectric power turbine components are the fundamental problems in the rivers of Himalayas and Andes. In the present work, the latest research conducted in both the fields by various investigators and researchers are discussed and critically analyzed at different turbine components. Analysis shows that both types of erosion depends on flow characteristics, surface, and erodent material properties. Design optimization tools, coalesced effect (CE) of sediment and cavitation erosion and well conducted experiments will yield results that are beneficial fo
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Tiwari, G., V. Prasad, S. N. Shukla, and V. K. Patel. "Hydrodynamic analysis of a low head prototype Francis turbine for establishing an optimum operating regime using CFD." Journal of Mechanical Engineering and Sciences 14, no. 2 (2020): 6625–41. http://dx.doi.org/10.15282/jmes.14.2.2020.07.0519.

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Hydraulic turbines need to operate at regimes other than designed ones. Off-design functioning of these turbines yields an inefficient and uneconomical operation of hydro projects. Performance and energy losses at different possible operating conditions need to be evaluated before finalizing the design of water turbines for satisfactory operations. Moreover, hydraulic turbines are unique machines designed for unique set of operating conditions and cost a huge percentage of the overall cost of the project. This work is compiled with twofold objectives; derivation of complete performance charact
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Dissertations / Theses on the topic "Francis turbine Computational fluid dynamics CFD Turbine design Hydropower"

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Okyay, Gizem. "Utilization Of Cfd Tools In The Design Process Of A Francis Turbine." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612452/index.pdf.

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Francis type turbines are commonly used in hydropower generation. Main components of the turbine are spiral case, stay vanes, guide vanes, turbine runner and the draft tube. The dimensions of these parts are dependent mainly on the design discharge, head and the speed of the rotor of the generators. In this study, a methodology is developed for parametric optimization by incorporating Matlab codes developed and commercial Computational Fluid Dynamics (CFD) codes into the design process. The design process starts with the selection of initial dimensions from experience curves, iterates to impro
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Yildiz, Mehmet. "Design And Performance Analysis Of A Pump-turbine System Using Computational Fluid Dynamics." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613761/index.pdf.

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In this thesis, a parametric methodology is investigated to design a Pump-Turbine system using Computational Fluid Dynamics ( CFD ). The parts of Pump-Turbine are created parametrically according to the experience curves and theoretical design methods. Then, these parts are modified to obtain 500 kW turbine working as a pump with 28.15 meters head. The final design of Pump-Turbine parts are obtained by adjusting parameters according to the results of the CFD simulations. The designed parts of the Pump-Turbine are spiral case, stay vanes, guide vanes, runner and draft tube. These parts are desi
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Conference papers on the topic "Francis turbine Computational fluid dynamics CFD Turbine design Hydropower"

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Eichhorn, Markus, and Eduard Doujak. "Impact of Different Operating Conditions on the Dynamic Excitation of a High Head Francis Turbine." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65625.

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Fatigue analysis becomes more important in the design phase of Francis turbine runners due to the changing requirements on hydropower plants, affected by the increasing amount of volatile energy sources. Francis turbines are operated more often and over longer periods of time at off-design conditions to provide regulating power to the electric grid. The lifetime of a Francis runner depends mainly on the dynamic excitation induced by unsteady pressure pulsations like the rotor-stator interaction or draft tube vortex ropes. An approach using one-way coupled fluid-structure interactions has been
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Franco-Nava, Jose Manuel, Erik Rosado-Tamariz, Oscar Dorantes-Gomez, Jose´ Manuel Ferna´ndez-Da´vila, and Reynaldo Rangel-Espinosa. "CFD Performance Evaluation and Runner Blades Design Optimization in a Francis Turbine." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78413.

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The application of computational fluid dynamics (CFD) in the redesign or rehabilitation of hydraulic turbines appears to be necessary in order to improve their efficiency and cost-effectiveness beyond the traditional redesign practices. The runner geometry considered within the computational domain was modelled by using a three-dimensional laser triangulation scanner coupled with a portable coordinate measurement system. The runner geometry was generated by a number of 3D sub models, one for each of the main components of the runner, crown, band and a blade. In order to obtain a blade geometry
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Franco-Nava, Jose´ Manuel, Oscar Dorantes-Go´mez, Erik Rosado-Tamariz, Jose´ Manuel Ferna´ndez-Da´vila, and Reynaldo Rangel-Espinosa. "Design Tools for the Performance Improvement of a 76 MW Francis Turbine Runner." In ASME 2009 Power Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/power2009-81201.

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Application of two mayor design tools, Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD), for the performance improvement of a 76 MW Francis turbine runner is presented. In order to improve the performance of the runner, not only a CFD based optimization for the runner but also its structural integrity evaluation was carried out. In this paper, a number of analyses included within the design tools-based runner optimization process are presented. Initially, a reference condition for the fluid behaviour through turbine components was carried out by means of the computation of
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Okamoto, Hidenobu, and Akira Goto. "Suppression of Cavitation in a Francis Turbine Runner by Application of 3D Inverse Design Method." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31192.

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This paper describes a new design method of blade geometry for a Francis turbine runner by using a three-dimensional inverse design method and the Computational Fluid Dynamics (CFD) technique. The design objectives are the suppression of cavitation by reducing the area in which static pressure is lower than the vapor pressure while keeping the efficiency high. In the inverse design method, it is possible to optimize the static pressure distribution in the runner by controlling blade loading parameters and/or stacking condition, which is related to a blade lean angle, for the same design specif
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Sato, Koma, Yuta Tamura, and Kiyohito Tani. "Multi-Objective Optimization for Francis Turbine Runner Using Genetic Algorithm." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36401.

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A multi-objective optimization system for a Francis turbine runner that uses a genetic algorithm was developed. Francis turbine is widely used because of its flexibility of meriodinal geometry. However, since a runner of a Francis turbine consists of fixed blades, it can show a high performance in a narrower range of operating conditions compared with diagonal and axial hydraulic turbines. Thus, the design of a Francis turbine runner needs plentiful design experience. The aim of this study is to develop an automatic design system for a Francis turbine runner and evaluate its availability. This
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Seeley, Charles, Sunil Patil, Andy Madden, Stuart Connell, Gwenael Hauet, and Laith Zori. "Hydro Francis Runner Stability and Forced Response Calculations." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90456.

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Abstract Hydroelectric power generation accounts for 7% of the total world electric energy production. Francis turbines are often employed in large-scale hydro projects and represent 60% of the total installed base. Outputs up to 800 MW are available and efficiencies of 95% are common. Cost, performance, and design cycle time are factors that continue to drive new designs as well as retrofits. This motivates the development of more sophisticated analysis tools to better assess runner performance earlier in the design phase. The focus of this paper is to demonstrate high fidelity and time-effic
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Walsh, Rowan W., Hossein Hosseinimanesh, Seyed Nourbakhsh, Mohammad Meshkahaldini, and Amy M. Bilton. "Modeling and Experimental Validation of a Pico-Scale Francis Turbine for a Self-Powered Water Disinfection System." In ASME 2018 Power Conference collocated with the ASME 2018 12th International Conference on Energy Sustainability and the ASME 2018 Nuclear Forum. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/power2018-7312.

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Access to both electricity and clean drinking water is challenging in many remote communities. A self-powered water disinfection system, currently under development, can potentially address this challenge. In the proposed design, energy from water flowing through the system is harnessed using a pico turbine (nominal output power of 60 W) and used to power an electrochemical disinfection process. The characteristics of turbines at the pico-scale (less than 5kW) required for this system are not well researched, and off-the-shelf designs are either too bulky or too inefficient for this applicatio
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Kerikous, Emeel, and Dominique Thévenin. "Performance Enhancement of a Hydraulic Savonius Turbine by Optimizing Overlap and Gap Ratios." In ASME 2019 Gas Turbine India Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gtindia2019-2670.

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Abstract Due to the significant increase in the human population, satisfying its energy demand becomes a major challenge at present and in the future. Hydropower is a form of renewable energy that converts the potential or kinetic energy of water to useful mechanical power. Considering the low speed of streaming water, hydraulic Savonius turbines can be effectively used for such conditions. Such turbines are robust and very simple to manufacture. However, Savonius turbines suffer from a poor efficiency. For this purpose, an optimization process was done to improve the power density of a hydrau
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Wang, Tao, Xiaobing Liu, Xide Lai, and Qiuqin Gou. "Effects of Blade Inlet Width on Performance of Centrifugal Pump as Turbine With Special Impeller Using in Turbine Mode." In ASME 2016 Fluids Engineering Division Summer Meeting collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fedsm2016-7667.

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A reverse running centrifugal pump is one of the attractive choices in micro-hydropower development and industrial pressure energy recovery. One of the main problems in utilizing pump as turbine (PAT) is that the performance of PAT is usually not ideal due to the impeller with the routine backward curved blades which do not match well with turbine running condition. A cost effective suitable way for solving this problem is to redesign impeller with forward curved blades from turbine working condition while the other components do not undergo any modifications. Blade inlet width is one of the m
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